Mere existence of a new device mandates its use. Marijuana usage as drivers: breathalyzer for marijuana = to measure the legal dosage. Blood pressure cuffs: not very accurate (manual and electronic, cuffs are one size, humans are all sizes, expectations of blood pressure, what is normal and what is not. Routinization : might not be the best for the patient. Treatments and rituals/routine: disguise the reality, reduce the feeling of uncertainty, moral imperative = provide treatment, ex. Antibiotic usage: don"t necessarily help or are needed, people want something (a pill/answers/solutions) when they go to the doctor"s office. Considering the conditions of the production of science. Situated in spaces, times, locations, and particular material practices. Doable problems: align research problems with capacities, understand constraints, what counts as a research organism, ex. Techniques can change or create whole fields: tools can modify disciplines and well as disciplines modifying tools .